Apparatus for the manufacture of artificial-marble slabs



July 3, 1928.

A. STRITTMATTER v APPARATUS FOR-THE MANUFACTURE OF ARTIFICIAL MARBLE SLABS s Sheets-Sheet Filed Feb. 18, 1927' 2m 0 Jim W 1 n a, vs M ni July 3, 1928.

A. STRITTMATTER APPARATUS FOR THE MANUFACTURE OF ARTIFICIAL MARBLE SLABS Filed Feb. 18, 1927 s She ets-Sheet 2 i 'a c a) I 7 7/2 (I I] I I, l /7?Z '9 I I] v 2 A j l| I] 9 P 3% HH IF HT I 7 f 9 I I l n a w 11.. 11, Hm... I z/ 1""h' IH' T T 0 0 Z Q k W llllllllllllll July 3, 1928. 1,675,833

A. STRITTMATTER APPARATUS FOR THE MANUFACTURE OF ARTIFICIAL MARBLE SLABS C Filed Feb. 18, 1927 3 Sheets-Sheet 3 Patented July 3, 1928.

UNITED STATESJATENT" OFFICE;

AUGUST s'rarrrnA'rrna or reunions, BAnEn, GERMANY.

APPARATUS FOR THE EANUF c'rURE or ARTIFICIAL-MARBLE SLABS.

Application filed February 18, 1927, SeriaLNo; 169,283, and in Germany February 16, 19269 In the'manufacture of artificial marble slabs, with or without a high finish-,itis the practice to employ glass plates, to which there is applied athin color-layer, which 5 may be variegated, and which subsequently,

with the aid of a frame, receives the IIIOP-f tar or other body-material necessary to form a slab of the desired thickness, aneven sur face being produced by shaking.

The present invention relates method of applying the masstothe lass plates, whereby the manufacture of arti cial marble slabs can be carriedout more rapidly and economically than hitherto.

of the layer deposited upon the glass plates, and furthermore enables such thickness to be altered at any time, as may be required.

Other features of the invention will be point-' ed out below.

According to my invention the glass plates are pushed across the bottom. of the receptacle containing the color-mass, through apertures located at twoopp'osite walls, in

such manner that theglassplate can only convey material through the exit-aperture (which may be adjustable in size). in a layer Whose thickness is determined by the dis tance between the glass surface and the top,-

edge of the aperture.

The glass plates may be advanced in continuous succession, that plate which for the time being lies below the receptacie,being pushed forward by the succeeding, abutting,

necessary during manufacture. Instead of theentire backwallof the receptaclebeing adjustable, a flap or slide may beproyided being rigid.

The mortar to serve as body or foundation for the slab may be applied in familiar manner with the aid of frames placed upon the glass plates, carrying the layer of colormaterial.

My inventionis illustrated inthe acconr panying drawings, in which to a novel My invention'ensures uniform" thickness plate, whichthen occupiesthe position va-:-

at its bottom portion toenable regulation of i the size of the aperture, the receptacle itself Fig,.l is a perspective view of one construction of the apparatus,

Fig. :2 a plan,

Fig.6 a longitudinal section on the line Fig. 4a cross section on the line C D of Pi .2. I

l igi 5 isa plan View showingga modified form of construction,

F' 5, aI El Fig. 8 a perspective view of a base-board scanying a set of glass plates;

Fig. 8 shows a detail to be hereinafter re-w ferred to.

The box-shaped receptacle for the colormass is formed by two longitudinal "walls w b c adjustably fitted in the side walls a of a frame a, and two cross walls or partitions d f supported by the said longitudinal walls.

By altering the distance apart of thewalls b c and employing partitions (Z f of corre sponding -width,the size of the reoeptaclecan be readily-adapted to the conditions of anyparticular case, such as dimensions :of i the slabs to be produced, the quantity of :the

color-mass and so forth. i

In theform of construction shown in Figs.

1-4 the adjustability of size :of the receptacle is attained by the provision of a numberof vertical grooves m in theframe-walls a into which grooves. the ends of the pal-al lel walls be can be slidden from above;

whilst the Walls 5 c themselves are furnished along their top edges with notches n, to accommodatelugs b projecting laterally from the partitions d i f.

In order to impart stability andi prevent lateral yielding of the lower parts' of the partitions d f, thelatter fit into guides, consisti'ng-of pins or other projections: p, protrudingfrom the bottom portion of the walls b ob The bottom of. the receptacle is constituted by that glass plateh which has been pushed below it for the time being. The walls I) 0 are provided with scieiwpirls and thumb-nuts 9, whereby they may be held in any, desired elevated position. The front:

wall b will be raised from the base of the frame a only to such extent as is requisite to admitpassage be'low it of the glass plate h; whilst the back wall 0 must be elevated to the extent necessary to admit the exitof the glass plate carrying a layer of material of the thickness desired.

For the purpose of affording guidance to the glass plates h during their passage, two parallel fillets z' are provided, capable of adjustment relatively to each other. The guide-fillets i should preferably extend right across the base of the frame a, in order that the glass plates it may be accurately guided both on introduction and exit.

The adjustment of the guide-tillets i in the construction illustrated is effected by means of thumb-screws g taking into the tapped rectangularly bent front endsof the lillets and pressing against the edge of the framebase, whereby the similarly bent rear ends of the fillets are drawn snugly against the back edge of the frame-base.

The back wall 0, which serves as it were as striker for the mass 6, is preferably provided at the bottom of its outer side with a wooden or other fillet k, adapted to smooth down the surface of the layer on the lass.

plate 72. during its exit. Instead of the a ove arrangement an other suitable device, such as a roller wt 1 scraper-plate, may naturally be employed.

The method of procedure is as follows The guide-fillets 2' having been adjusted to the breadth of the lass plates employed, the walls I) c are slidden each into one of the airs of grooves 771, in the sides a of the rame, dependim upon the size of receptacle required. The front wall I) is so adjusted with the aid of the thumb-nuts g as to leave just sufficient space below it to permit passage of the glass plate. Similarly the back wall 0 is adjusted with the aid of its thumbnuts 9, but at such a height as to leave sufiicient room for exit of the glass plate to gether with a layer of material upon it of the thickness desired. Hereupon two partitions (1 .f,of size corresponding to the distance apart of the two walls I) c, are set in position, in conformity with the width of the glass plates h. In such position the bottom edge of each partition (Z f will bear closely against the face of the corresponding guidefillet i and lie flush with the inner edge.

thereof, making a tight joint.

The parts being so assembled, the first glass plate It is slidden in between the two guide-fillets 2', and through the aperture below the front wall I), thus. constituting the bottom of the receptacle for the color-mass. Differently colored masses can then be filled in as desired. The weight of the mass 6 is suflicientto enable exit on the glass plate of such quantity as will pass below the bot tom edge of the wall 0, when the glass plate is pushed from below the receptacle by advance of a succeeding glass plate.

After the first glass plate has been completely expelled from its position below the receptacle by the advance of the succeeding glass plate, the latter will constitute the receptac e bottom; and this procedure can be repeated as often as required.

It will thus be seen that in this simple method of manufacture the a paratus can be readily adjusted to the condltions of any particular case,-both as respects dimensions of the lass plates and the amount of material to e worked; and that the thickness of the layer of material to be conveyed by the glass plates can likewise be regulated, even during working of the apparatus.

The modified construction depicted in Figs. 58 is for the production of slabs with an unbroken striped desi n, the mass being applied in a continuous ayer to sets or trains of glass'plates mounted on a common slidable base. In such manner as'se- ,quence of slabs can be turned out, which when laid present a substantially uninterrupted stripeddesign. With the firstabove described apparatus it would not be possible to produce such continuity of design, as the moldingsframe which is set upon the glass plate carrying the mass takes over it at all sides, so that a considerable portion of the design will be wanting between two contiguous slabs, with the result that there i:

will be a fault in the striped design between any two abuttin slabs when laid.

In this modi ed constructional form a base 10 is provided with two wooden side walls :0, furnished at intervals with vertical grooves m, into which the crosswalls I) a can be slidden and adjustably held in elevated position by screw-pins and thumbnuts g, as in the. case of the construction first above described.

As can be seen from Fi 8, a desired number of abutting glass pFates h are disposed in aset or train upon a common base a, and are laterally confined by angle-iron guide-rails t, screwed to the board a and provided at intervals corresponding with the length of the plates with notches u to receive cross strips v, of which one is shown in perspective in Fig. 8.

The procedure with this construction is as follows z The glass plates h are disposed on the board 8, between the guide-rails If, so as to abut closely one against the/other, and the right-hand guide-rail t is then pressed tightly against the row of plates h and screwed fast by thumb-nuts y, sothat the plates are all firmly retained in position.

The board 8, with the train of plates h, is then pushed forward on the base w until the foremost glass plate arrives below the re ceptacle for the mass e, constituted b the side walls :0 and cross walls b c, and thus forms the bottom of the said receptacle. Hereupon the color-mass can be filled in, in differently colored quantities if desired.

The board 8 carrying the glass plates h is then advanced in the direction of the arrow (Fig. 6), until finally the last glass plate of the set arrives below the receptacle. 0nd board 8, with a set of glass plates h, is then slidden in, so as to abut against the first board 8 and push it completely from below the receptacle, the first glass plate of the second board 8 then constituting the bottom of the said receptacle. 'The procedure is then continued in the described manner, and so on.

After a board .9, with its glass plates h carrying a layer of the mass e, has passed completely from the receptacle, the cross strips 4) (Fig. 8) are inserted in the notches u of the guiderails t, so that each glass plate It is, as it were, framed by four walls at and '0, which serve to confine the mortar foundation on such being filled in.

The strips '0 being thin, no appreciable interruption of the striped design Will be observable at the abutting surfaces of the thoroughly hardened slabs, which can thus be laid, in the same order in which they were manufactured, one below or beside the other, to produce a continuous striped design.

What I claim is- V 1. In apparatus for manufacturing artificial marble slabs, a receptacle for the colormass having two opposing vertically adjustable walls, means for spacing said walls at variable distances apart, and means for holding the said walls in elevated position, in combination with plates slidable below the elevated walls, across the receptacle, and. in succession constituting the bottom of the latter, the bottom edge of the rear wall constituting a striker for the mass conveyed from the receptacle by each plate.

2. In apparatus for manufacturing artificial marble slabs, a receptacle for thecolormass having two opposing vertically adjustable walls, means for spacing said walls at variable distances apart, and means for holding the said walls in elevated position, in combination with plates slidable below the elevated walls, across the receptacle, and in succession constituting the bottom of the latter, the bottom edge of the rear wall 'constituting a striker for the mass conveyed fromthe receptacle by each plate, and adjustable devices for laterally guiding theplates.

A sec- 7 {3. In apparatus for manufacturing artificlal marble slabs, a receptacle for the colormass having two opposing vertically adjustable walls, means for spacing said walls at variable distances apart, means for holding the said Walls in elevated position, and means for spacing the other two receptaclewalls at variable distances apart, in combination with plates slidable below the elevated walls, across the receptacle, and in succession constituting the bottom of the latter, the bottom edge of the rear wall constituting a striker for the mass conveyed from the receptacle by each plate.

4. In apparatus for manufacturing artificial marble slabs, a receptacle for the colormass having two opposing vertically adjustable walls notched along the top edge, and two adjustable cross walls having lateral lugs engaging in the notches of the first said walls, means for spacing the notched Walls at variable distances apart, and means for holding them in elevated position, in combination with plates slidable below the elevated notched walls, across the receptacle, and in succession constituting the bottom of the latter, the lower edge of the rear notched wall constituting a striker for the mass conveyed from the receptacle by each plate.

5. In apparatus for manufacturing artificial marble slabs, a receptacle for the colormass having two opposing vertically adjustable walls, means for spacing said walls at variable distances apart, and means for holding the said walls in elevated position, in combination with a base slidable below the elevated walls, across the receptacle, and a se uence of abuttin platescarried by said slide le base, each plate in succession constituting the bottom of the said receptacle.

6. In apparatus for manufacturing artificial marble slabs, a receptacle for the colormass having two opposing vertically ad'ustable walls, means for spacing said walls at variable distances apart, and means for holding the said walls in elevated position, in combination with a' base slidable below the elevated walls, across the receptacle, upwardly projecting rails on the base, laterally confining the plates, and cross-strips slidable through the rails and in conjunction therewith constituting. box-frames to receive foundation-material for the slabs. O

In testimony whereof I afiix my si nature. AUGUST STRITTMAT ER. 

